Oldest piece of working and still used test equipment ?

16/09/2009 - 16:55 von N_Cook | Report spam
I decided to break into my 1000V DC, 10 Gigohm insulation tester, today. No
particular reason , just curious, as still in perfect working order.
Had to break a seal to get inside, never needed repair by me or previous
owners, just my adapting to 9V nicad use rather than pair of unobtainable
4.5V batteries.
Made in Austria , Norma Isolationmesser 667 001
Date inside is 15 December 1965, i thought it would be 1970s
Just disintegrated foam inside, compenentry like Siemens AD130, AC153 and
OC75 all fine. Whenever I check calibration with a 1G glass cased resistor
it is the same cal setting, no switch problems or anything else.


Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
 

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#1 Martin Whybrow
16/09/2009 - 20:35 | Warnen spam
"N_Cook" wrote in message
news:h8qu9s$buu$
I decided to break into my 1000V DC, 10 Gigohm insulation tester, today. No
particular reason , just curious, as still in perfect working order.
Had to break a seal to get inside, never needed repair by me or previous
owners, just my adapting to 9V nicad use rather than pair of unobtainable
4.5V batteries.
Made in Austria , Norma Isolationmesser 667 001
Date inside is 15 December 1965, i thought it would be 1970s
Just disintegrated foam inside, compenentry like Siemens AD130, AC153 and
OC75 all fine. Whenever I check calibration with a 1G glass cased resistor
it is the same cal setting, no switch problems or anything else.


Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I have an AVO transistor analyser, the data book that's with it is dated May
1960 but not sure of the actual manufacturing date. It doesn't get any use
because it needs 14 U10 sized cells which are £4.90 each from The Small
Battery company! I suppose I could make an adapter (well, 14 of them) to use
AA cells but I just haven't got around to it.
Lovely piece of kit, built like a tank and in remarkably good condition.
Martin
martin<dot here>whybrow<at here>ntlworld<dot here>com

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